Measurement of Characteristic Impedance of Silicon Fiber Sheet based readout strips panel for RPC detector in INO

TL;DR

This paper measures and compares the characteristic impedance of silicon fiber sheet and plastic honeycomb readout strips panels for RPC detectors in INO, emphasizing material properties and impedance matching for optimal signal transmission.

Contribution

It introduces a new silicon fiber sheet material for readout panels and compares its impedance characteristics with traditional plastic honeycomb panels.

Findings

Silicon fiber sheet panels have comparable impedance to plastic honeycomb panels.

Impedance varies with loading and over time for both materials.

Material choice affects signal integrity and detector performance.

Abstract

The India based Neutrino Observatory (INO) is a mega science project of India, which is going to use near about 30, 000 Resistive Plate Chambers (RPC) as active detector elements for the study of atmospheric neutrino oscillations. Each RPC detector will consist of two orthogonally placed readout strips panel for picking the signals generated in the gas chamber. The area of RPC detector in INO-ICAL (Iron Calorimeter) experiment will be 2m x 2m, therefore the dimension of readout strips panel will also be of 2m x 2m. To get undistorted signals pass through the readout strips panel to frontend electronics, their Characteristic Impedance should be matched with each other. For the matching of Characteristic Impedance we have used the principle of termination. In the present paper we will describe the need and search of new dielectric material for the fabrication of flame resistant, waterproof and flexible readout pickup strips panel. We will also describe the measurement of Characteristic Impedance of plastic honeycomb based readout strips panel and Silicon Fiber sheet based readout strips panel in a comparative way, and its variation under loading and with time.